Hey guys, I just ordered a refurb new model iMac from the Apple Store to be my new home rig that was on sale for 1800 after tax. I want something that will last at least 3 years and be able to handle games at decent settings for a while (though not a hardcore gamer, still like to play new single player games when they come out, like Walking Dead). I felt great about the purchase until I read a bunch of opinions online saying it's 780M or bust if one will do any gaming. Thing is, they don't offer the 780M refurbished, so I would be forced to buy new which would come to about 2250 after tax. My question is, is it worth the extra $450 to get the 780M over the 775M? If it was a few hundred, I'd probably jump on it, but for $450......kind of on the fence. Thanks all!